Automatic Temperature Control of Electric Motor Using PIC Microcontroller

Automatic control using embedded systems is an efficient technique that is crucial in recent times. This paper discusses the implementation of a temperature sensor in an electric motor to monitor the temperature, and provide automatic safety mechanisms by controlling various components, to ensure the safety and longevity of the motor. An LM35 temperature sensor is interfaced with microcontroller PIC16F877A, and the sensor input is processed, governed by safe motor temperature limits, to provide intimation and automatic PWM-based speed control of a fan-based cooling system, as well as the speed of the motor, to ensure motor safety as well as better energy efficiency. The system is simulated in Proteus and verified.